Struct Point 

pub struct Point {
    pub x: BigNumber,
    pub y: BigNumber,
    pub inf: bool,
}

A point on the secp256k1 curve in affine coordinates (x, y).

The point at infinity is represented by inf == true (x and y are zero).

Fields

x: BigNumber

The x-coordinate.

y: BigNumber

The y-coordinate.

inf: bool

Whether this is the point at infinity.

Implementations

impl Point

pub fn new(x: BigNumber, y: BigNumber) -> Self

Create a new point from x, y coordinates.

pub fn infinity() -> Self

Create the point at infinity (identity element).

pub fn is_infinity(&self) -> bool

Check if this is the point at infinity.

pub fn validate(&self) -> bool

Validate that this point lies on the secp256k1 curve. Returns true if y^2 = x^3 + 7 (mod p).

pub fn from_x(x: &BigNumber, odd: bool) -> Result<Self, PrimitivesError>

Recover a point from its x coordinate and y-parity. odd = true means y should be odd.

pub fn from_der(bytes: &[u8]) -> Result<Self, PrimitivesError>

Parse a point from DER-encoded bytes (compressed or uncompressed).

Compressed format: 0x02/0x03 || x (33 bytes total) Uncompressed format: 0x04 || x || y (65 bytes total)

pub fn from_string(hex: &str) -> Result<Self, PrimitivesError>

Parse a point from a hex string (DER encoded).

pub fn to_der(&self, compressed: bool) -> Vec<u8>

Encode this point to DER format.

Compressed (33 bytes): 0x02/0x03 || x Uncompressed (65 bytes): 0x04 || x || y

pub fn to_hex(&self) -> String

Encode to hex string (compressed DER).

pub fn add(&self, other: &Point) -> Point

Add two points.

pub fn mul(&self, k: &BigNumber) -> Point

Scalar multiplication: self * k.

pub fn negate(&self) -> Point

Negate a point (same x, y = p - y).

pub fn eq(&self, other: &Point) -> bool

Check equality of two points.

pub fn dbl(&self) -> Point

Double this point (P + P = 2P).

pub fn get_x(&self) -> BigNumber

Get x coordinate (clone).

pub fn get_y(&self) -> BigNumber

Get y coordinate (clone).

Trait Implementations

impl Clone for Point

fn clone(&self) -> Point

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Point

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.